Portion of lamp housing



FIG. 1 is a perspective view from above of a portion of lamp housing in accordance with my design;

FIG. 2 is a perspective view from below of the portion of lamp housing in accordance with my design;

FIG. 3 is a side elevation view of the portion of lamp housing in accordance with my design;

FIG. 4 is a front elevation view of the portion of lamp housing in accordance with my design; and,

FIG. 5 is a top plan view of the portion of lamp housing in accordance with my design.

The broken lines showing environmental structure are for illustrative purposes and form no part of the claimed design. 

The ornamental design for a portion of lamp housing, as shown and described. 